Jo Daviess, Illinois HVAC Climate Zone

Jo Daviess is located in IECC Climate Zone 5A (Cool - Humid). Get accurate Manual J load calculations with official design temperatures for Jo Daviess.

Climate Zone
5A
Winter Design
0°F
Summer Design
91°F
ZIP Codes
9

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Climate Zone 5A requires precise load calculations. Upload your Jo Daviess blueprint and get a professional Manual J report in 60 seconds— first report is FREE. Pre-loaded with Jo Daviess's exact design temperatures (0°F winter / 91°F summer).

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Verify Your Jo Daviess ZIP Code

Enter your ZIP code to confirm it's in Jo Daviess and get climate zone details.

Jo Daviess covers 9 ZIP codes: 61001, 61025, 61028, 61036, 61041, 61059, 61075, 61085, 61087

Jo Daviess Design Temperatures

Official ASHRAE design temperatures for Jo Daviess, used for accurate Manual J load calculations.

Winter 99% Design Temp
0°F
Summer 1% Design Temp
91°F
Summer Wet Bulb
75°F

IECC Requirements for Zone 5A

Minimum insulation and window requirements for Jo Daviess per IECC 2021.

Wall Insulation:R-20
Roof/Ceiling:R-49
Floor Insulation:R-30
Window U-Factor:0.3
Window SHGC:0.4

Energy Code: 2021 IECC

Recommended HVAC Equipment for Jo Daviess

Heating Systems

Gas furnace (95%+ AFUE)
Boiler
Heat pump (cold climate)
Typical AFUE
95-98%

Cooling Systems

AC (13-16 SEER)
Heat pump
Typical SEER
13-16 SEER

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Jo Daviess design temps
Zone 5A compliant
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